They made her wear her uniform for the Christenings and were massively criticized for it, it smacked of massive entitlement and being completely out of touch.
Still baffling.
Most baffling that they did this again after G's Christening, when it already didn't sit well with anyone back then already.
The Midds like to show off their Norland nanny in her uniform, like the hired help she is.
That's why she didn't wear the uniform at H&M's wedding, because even the royals don't make their nannies wear uniforms.
Norland nannies are some of the most expensive you can have. I don't think any other nanny has a higher salary than Norland trained nannies.
Yes, Maria lives with them and the part time nanny (/nannies) likely as well, since they move around.
Maria is definitely the live-in kind of nanny.